Headlight.



0. WINSTON.

HEADLIGHT.

APPLICATION FILED MAR. I7. 1916. RENEWED IAN. 22.1918.

I,2?6,605. Patented Aug. 20, 191g.

2 SHEETS-SHEET 1.

v/flfy/ @MM f 7 //WMM U. WISTGNv HEADLIGHT.

APPLICATION FILED MAR.17,1916. RENEWED JAN. 22,1918. 11227.? @605,Patented Aug. 20, 191s.

Z SHEETS-SHEET 2.

` 5y /f/s Afro/vfw www am N OVERTON WINSTON, OF MINNEAPOLIS, MINNSOTA.

HEADLIGHT.

Larnaca.

Specification of Letters Patent.

Patented Aug. 20, 1918,

Application filed March 17, 1916, Serial No. 84,773. Renewed January 22,1918. Serial No. 213,273.

To all whom t may concern:

Be it known that I, OVERTON WiNsToN, a citizen of the United States,residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful Improvements inI-Ieadlights; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

My present invention relates to electric headlights for automobiles andis in the nature of' an improvement on, or modification ,ordinaryheadlight, such as used on automo of mechanism disclosed and claimed inmy co-pending application S. D17/1,341, filed January 26th, 1916, andentitled Head-4 lights. Particularly, the invention is directed to theimprovement of means for shifting the electric light bulb in respect tothe reflector, whereby the bulb may be moved transversely toward andfrom the axis of the reflector.v The bulb, however, is also preferablymounted for axial movements, or for movements on the axis of thereflector, so as to bring the filament of the bulb, to the yfocal centerof the concave reflector.

The invention is illustrated in the accompany drawingsi wherein likecharacters indicate like parts throughout the several views.

Referring to the drawings:

Figure 1 is a vertical longitudinal section taken centrally through thereflector, some parts being shown in full;

Fig. 2 is a detail chiefly on the same section as in Fig. 1, with someof the parts shown in full that are sectioned in Fig. 1, some parts alsobeing broken away;

Fig. 3 is a front end elevation ofthe eccentric lamp holding sleeve andsocket;

Fig. 4 is a rear end elevation of the same;

Fig. 5 is a vertical section showing the eccentric lamp holding sleeveand a portion of the lamp socket in which it is mounted;

Fig. 6 is a transverse section taken on the line ma of Fig. 1;,and Figs.7 and 8 are diagrammatic views illustrating oscillatory movements of thelamp bulb.,

The numeral 1 indicates the casing of an biles, and the numerals 2 and 3indicate, respectively, the reflector and lens or glass plate of the.headlight. V bulb 4f illustrated is of the well known Edi- The electriclight;

swan single base type, but, of course, other types may be employed. Asshown, however, this bulb has an outer contact sleeve 5 and an axialcontact boss 6. The sleeve 5 -is'adapted to be telescoped into a lampholding collar 7 that has an eccentric flange, by means of which it isswiveled in the front end of a lamp socket made up of a pair oftelescopmg cylindrical channels 8 and 9, the

- latter of which is mounted to slide within the former, but is heldagainst rotation in respect thereto. The outer shell 8 of the lampsocket is providedf'with forwardly and upwardly projected lugs or armsthat are connected by pivots 10 to a hollow bearing lhead 11. Thisbearing head 11 is rigidly but detachably secured to the back of arelector, by means of a flanged clamping nut 12 that has threadedengagement with an annular anchoring hub 13 rigidly secured to the backof the reflector. The reflector 2 has an axial passage through which thefront.

end of the lamp socket and the collar 7 are projected with clearance.

Swiveledin the rear end of the outer shell 8 of the lamp socket is anadjusting nut 14 that works on the threaded stem of a contact carryinghead 15 mounted to slide within the outer shell 8 and provided with thecustomary forwardly spring-pressed contact 16 that engages the contactboss 6 of the light bulb. Here it may be stated thatthe electricconnections -to the lamp may be of the usual arrangement, provided forlight vbulbs of the character above stated.

- lar 7 Byl rotary adjustments of the eccentric collar 7 in respect tothe lamp socket and by rotary adjustments of the bulb in respect to saidsleeve, it 1s possible always to bring the filament of the bulb to adesired position even when` it has been warped to one side of the axisof Said bulb, This, howgid I el uiivei 3l inounte evei, is a eatuienioie fully diseusseel in my prior application N. @,661, tiled of date,lecein'nei f2, 1915, and entitled l-leadlignts.

Rig-idly seouietl on the body and ieai' enel portion oi she outei1sleeve 8 o the leinp socket is aV sollen1 2l prefemloly oi soil; ironoi' steel and adapted to serve es on ennotine, in cooperation Wit-li anupper and lower electro-magnet 22 shown as seonrecl to and supported byan annuler ring 23 seeuieel to 'the inteioi1 of tlie lamp housing beekof l'loe ieec'toi. This ing 23 is preleielolj,T of lames, aluminum oiotlie non-magnetic instal. The pole pieces 22a of the magnets sieariangetl for direct engagement with the oylintliioal upper anflwloweisuiiasoes of the simstnie eol'lei'fL and they serve to limit the extrememovements olu the seitl siinetnie, intl hence, of 'lie lsinp socket andlight bulb.

The resi enti poition oi the minatne slee'i'e 2i is formed with uppeiincl loi-Fei' notches 2%? the outei1 snisees oi wliioli sise iouncle'tlso es to ei'loiol sein suisees'l'o pnipose which will pfesently appesi?.el. smell looli: levei1 25 is piifotslly esso-eiste@ with eziolieleetio-niegnet, being, es shown9 inteinexlietely pivotefl to e, lug 26on tlie pole piece tlieieoi`, with its outei" enel yieldingly piessetioutwsicl by s light spiing also sli-own as snehoied to the seitl polepieee. The outer oi free enfl positions oi these loeli levens 25 onepieileieoly oi sollt iion oi steel so feletefl to outei1 pole pieces 22hof magnets that they sot as ofinetnfes in eoopeietion tlieieivitli. it'tlieii inne? ends,

tlie seid lei/eis 25 eie pioviletl with Wedge satin@ loel lies-tls 28projected ioinr o tlieie'fioin end lie-ying; ionntletl oi sein eetingsui'eoes foi ngegenient 'with tne sounded oi suiisoes of the notolies intlie einie'bniie sleeveiiizil ofljnstinents oiC tile light 'bullo mepioclneetl io'tsiy movements oi? lie ntljusting nut 'le and to 'tliisenel, as shown, the seid not is pios/islet@ its ses? enel, ist" mtlielgrooves 30, adopted to be engogetl in` o iotei'jg moi/'sole in e sni lcl on tlie oeol o elle ing device, liowev of the piesent spp cation andclaimed esi sin n-. tions eloove itlen"iietl.

The opeietion liiiefly described' is e lows:

in tlie position the lomp bulb slio'ival and '2,tlie nl' tlie bulb isexis of tile es sequlietl to tlii'o'e7 the light loesv the s'i'ountl lmachine; sooltety is npi lo bulb in respect to tlie ielectoi isavoideti. v

lWeen it is desir-eti to raise the lomp socket and move tlie light bulbclownwaicl so that, its ilzinient will loe et the amis of 'theireileotoi, es ieqniietl when itv is flesiieel to pioject the lightbenin falo alleati of the ma chine7 it is only neoesseiy toteinpoiai'ily energize the upper electromognet. lll/ie iist effect oi?tliis is to cause the pole piece 22D of tlie uppei eleetio-inagnet toect upon tlie upper end of tlie upper lock levei 25 enel tlieieby inoveits lieecl 28 'ioin between the pole piece 22a and cooperating sufi-sceof ilse ainietuiie sleeve 2l. rlrhe seeonel ene/3J of eneiglzing tiieseid uppei' is to cause 'tlie lowes pole piece 222 tlieeo to eet uponthe eiinstue sleeve 2l end li t the Teer poition of the lamp socket,tieieby bringing the upper sufece of the seicl sleeve into Contact withtlie upper pole piece 22a. lil/nen tlie upper magnet' 22 iseneigizetlytne nppei locl leveit 25 will stenti sppfoxinisfteiy in theposition indicated. ley dotted lines in ig.. l, and in suoli position,it `will be noted, the ionntletl poition oiPA its .movement of tlieoutei extremity of Elie Coopeieting noten ol tlie oollni 2l, so 'tlistthe ssicl parte 'will lie engaged incl will cusiiion the upwsietlmoi/ement oit tlie colle? and ifeai1 enti of the lomp socketn is theseid eolle'f lamp socket sie niovecl upi'foitl untlei 'the lioweiei, thelie-stl od p will loe 'oi'oecl into the eollei l end will en that thelieotl loiven look l egetl with tlie lower notoli in l? l, in feettlieseid nope? end loeei" loos eveis lieve like opei's'tions except theactions of 'the seid lool: levens sie reveisetl in `"espeet to tlieino'fenients oi y'alie lsinp socket.

lfitli 'the oonstiuot-ion clesoiiloeel, axial movements of 'the section9 of the lampsoele, enti lienoe7 oi tlie leinp bulb, sie l oflueetl byrotation of 'the so-eelletl nut Within tiie socket9 suoli adjustments ettlie bullo @lement t-lie focal re-lecto?. offsetting tlie oie the inpsocket, to exis tneieo, importent feu nffitli 'tlie pivotal sup- .oeliet'tviensveisely intell move sense 5 tain the best results for short focusor short projection of the light beams onto the ground, the lamp bulbshould be given a forward movement when moved upward, so

as to advance the lamp filament, in respect l to the reflector. Thisresultl can/be accomplished by offsetting the pivotal support of thelamp socket, as shown in the drawings.

In the diagram views, Fig. 8, the heavy dotted lines a, indicate thehorizontal axis i of the reflector, and the lamp bulb 4, which isdiagrammatically indicated, is by full lines, shown as normally at theaxis of the reflector, as required for long beam projection. The dottedlines at 4 indicate the position of the bulb when the lamp socket isoscillated on the arc of a circle struck from the point b which is onthe axis of the reiiector, and the dotted line marked 4 indicates theposition of the bulb when moved upward on the arc of a circle struckfrom the pivot The lamp at 4', it will be noted, is moved backward,while the lamp at 4 is moved forward, in respect to the normal positionof the lamp. In the dia- S0 gram view of F ig. 7, the dotted lines at 4indicate the raised position of the lamp when moved on the arc of acircle struck from the pivot b, which pivot is located above the axis aof the reflector, such a distance half way between the upper and lowerpositions of the lamp bulb, so that the bulb, in

extreme positions, is on a vertical line.

Attention is further called to the following facts: For illustration, wewill assume that the axis of the lamp holding collar 7 is offset onethirty-second of an inch from 'the axis of its eccentric iange. In thiscase, the lamp holding socket in which the said eccentric flange isswiveled, should be so arranged that when in a horizontal position,

its axis will be parallel with, but odset be.- low the axis of thereflector one thirty-second of an inch, or the distance of eccentricityof the eccentric flange of said collar 59 7. With this arrangement,regardless of whether the lamp filament is at the true axis of the lamp,or whether it is warped to one side, the said filament may always beadjusted so that it will be at the axis of the reflector when the socketis in a horizontal position.

The above described three-point interlocking connection between the bulband socket is important. Usually one, and sometimes B0 2 lock lugs andcoperating grooves are employed, but neither lof such arrangementsprovides the best means for connecting the lamp to the socket. It is awell known fact that three points determine the position of @5 a plane,and on this same principle, the engagement of the three lugs with threecorrugations or shoulder surfaces will determine the position of theaxis of the light bulb in respect to the axis of the socket. It is, ofcourse, assumed that there is sufficient play between the shank of thebulb and the seat of the socket or holding collar to permit the abovenoted self-adjustment of the bulb in respect to the socket.

What I claim is:

l. In a headlight, the combination with a refiector and a lamp socketthat is movable in respect to the axis thereof, of upper and lowermagnets formoving said socket, and upper and lower locks for holdingsaid socket alternately in lowered and raised p0- sitions, the saidlocks having portions working with wedge-like actions between saidsocket and the pole pieces of the respective magnets.

2. In a headlight, the combination with a reflector and a lamp socketthat is movable in respect to the axis thereof, of upper and lowermagnets for moving 4said socket, and upper and lower locks for holdingsaid socket alternately in lowered and raised positions, the said lockshaving portions working with wedge-like actions between said socket andthe pole pieces of the respective magnets, and armatures connected tosaid locks and subject to said magnets, whereby,

when one of said magnets is energized, the coperating lock will bereleased, the armature drawn toward the energ1zed magnet,

v and the other lock rendered operative to secure said socket in suchadjustment.

3.In a headlight, the combination with a reflector, of a lamp socketpivoted for movements which carry the lamp bulb toward and from, theaxis of said reflector, upper and lower electro-magnets having polepieces operative upon and limiting the movements of said socket, andupper and lower lock levers having armatures subject to the respectiveupper and lower magnets and having heads working between the cooperatingpole pieces of said magnets and adjacent surfaces on said socket, theupper lever serving to lock said socket in 'a lowered position and thelower lever serving to lock said socket in a raised position. l 4. In aheadlight, the combination with a reflector, of a lamp socket pivotedfor movements which carry the lamp bulb toward and from the axis of saidrefiector, upper and lower electro-magnets having pole V piecesoperative upon and limiting the movements of said socket, upper andlower lock levers having armatures subject to the respective upper andlower magnets and 'having heads working between the copersaid soeiet iiie, raised positions and. the seid socket bevi surfaces that engage headsof said leveis with cam-like acti lo and cushion the movements of seidsocket.

5. En e, heediiglit, the Combine ion with reieeoi end e eociie; mountedfor pivotal movements that carry the lamp bulb eoweci end iom the exisof bhe ieiecto of an elec tro-magnet opeetive on said sookee o move iiiesame pimieiiy7 ami e ioeir. device fof iociiiig Seidl soeket having alsooushioi1- inf e. ybien ifo? silo'oping' the moveiiien4 iieeof, the saidmagnet sewing te eieaee sei lock and te yieifliilgiy hold the seine in eposition to gie-finally eop the mo'vemen oi' seid socket,

lSg En a iieediigio, iiecombineibion Wife e Ycasing and e ieecoithereine seid. reeetor having 2m axial passage7 i en ennuie? eilchoiioghub seem-ed @3o 'lzhe back of said le fiee'o aromi@ exiei passage theeoiemi the deeeciiebiy secilieei to said buio, iam@ socken oii/'obeiy'essociete Wih seid heb and hond. to supooi e lem@ ouib fougii the exi,nlessege of seid e ileotofe and ineens epoiieai iso seid heedv impaitiegoseiiietoiy movemeee fo sal soeei;

the combiiiegioii with a fleiein, saici ieeooi A essege of en ennuie?.ee fed to the beck of seid le toweoi and fiom the teefeof5 e nog seemedio tee miefioi of Salo. easing" 7 A seid oooi e lame Wien. said imo s Sisuppoi'geci by seid Ting end opeeive on seid socket eo osciiiete de oconnection lie eccentfic swivel eoniiecion between coiiai und soeie.

1G. In a. lamp socket, e. holding coiiai hem ing threeoiroiiiiiferenieiiy spaced inte?- iial ioiigitdineiiy exeiideci gooves,and e silouide'f at bhe inne? ei-emiiies of seid` gi'ooves., ineombinaioii Wi'h an eeotrie iight bulb having hiee ciiicuniieeniallyspaced outstanding lock', goojeetions on its shank, seid iocipiojectioes being iiiseitible tiifougii she three iiiteinei giooves ofsaid hoiding collar and into engagement Wiiii the ebree shouideisurfaces of seici coller5 Whereby, 'iie said bulb will be deiiiiteiypositioned iii resgect tto the exis of seid coller by the thee engaginglock piojeetions with 1ehe said thiee engaging siloukieis.

ll. in e iieediigiit, the combine-tion with e iieiiecior, of a. hiepsuppot emi azieiectiie iight bulb heid theieby Within said ie iectoi7seid lamp suppoit being iiiouned; to freely swing in e veticei piene 011a, fuiand veii-iceiiy oieet iom the exis o; seid ieiieoto and lampsuppoih l2., The combination with. e emp so'eiei9 of e iight beibhevingoe its sheiii thee iooi "luge nomziiiv engcl ti poi s on seid sockel;alici cieteimining the position of seid bulb in iespeet to SeieiSocke?du 3., The eomoinetion Wiii a imno socket having thee ejcfeneegiooves mei e lock ehouiei e; *he emiemities iiieieof'e iig'ot.

ee outstanding on ite shank te e seid giooves l v .L1 f my

